Figure 2: PCR detection of nxrA gene of the genus Nitrobacter. 2.0% Agarose gel showing the typical nxrA PCR amplified products of about 322 bp fragments in Lane 1 and 2 for Nitrobacter hamburgensis for strains NBW1 (KF618620) and NBW2 (KF618621); and Lane 3 showing of about 318 bp fragment of Nitrobacter vulgaris for the strain NBW3 (KF618622). Lane M, showing the 100bp DNA size marker (Promega).
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